condition mean min max Sterile Leaflet 0.205241 0.0 0.615723 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.971971 0.644722 1.3512 Secondary Rachis 0.8213826666666666 0.280458 1.15269 Petiole 3.89701 1.94605 7.77886 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0